Sash-pulley



J. H. FOOTE.

SASH PULLEY.

APPUCATION FILED FEB.2, 1920.

1,361,240, Patented Dec. 7,1920.

fy-f- EL. 4TH

J. H. FOUTE.

SASH PULLEY.

APPLICATION FILED FEB. 2, 1920.

1,361,240, Patented Deo. 920.,

fifi/7222.

J. H. FOUTE.

l SASH PULLEY. APPLICATION FILED FEB. z, 1920.

l N V EN TR.

A TTORNE Y.

JAMES H. FOOTE, 0F CINCINNATI, OHIO.

SASHPULLEY.

Specification of Letters Patent.

Patented Dec. 7, 1920.

Application filed February 2, 1920. Serial No. 355,806.

To all @07mm t may concern:

Be it known that l, JAMES H. F oo'rn, a citizen of the United States, residing at the city of Cincinnati, in the county ot Hamilton and State of Ohio, have invented new and useful Improvements in Sash-Pulleys, of which the following is a specification.

My invention relates to improvements in sash pulleys and the like and more particularly to the form and manner oi arrangement of their housings and the adaptation of their structural elements for securing such pulleys in mounting frames differing in relative thickness; the object oi' the present invention being, iirst to produce an inexpensive housing embodying means both simple and eiiicientA whereby it may be easily and quickly inserted in its mounting frame and securely held therein; second, to so form, and assemble in mobile and cooperative relation, the individual structural elements of the housing as to adapt them to function for this purpose without in any way detracting from the eliciency or" the housing in functioning.

as a support and a hood for the sheave and vthe chain, cord or ribbon in its passage over it; third, to provide a housing, without the embodiment oi' any additional elementthat may be depended upon to so function with proper eiiiciency without regard to variations in relative thickness of the mounting trames provided for its reception, thus nullii'ying all objection to the abandonment of screws or similar securing devices, keeping down the manufacturing cost of the window frame by obviating any necessity for the eX- orcise of especial care in the selecting -and machining ot' the material used in its construction and reducing the production cost oi the pulley by minimizing the different sizes required; fourth, to furnish a pulley that may be positioned and secured in its mounting 'trame at the building as readily and inexpensively as at the mill while vthe frames are in process of construction, which is oi considerable economic importance as it militates against the loss rom accidental damage and undue eX- posure to the weather to which pulleys installed iu the mill are subjected between the time at which the window frames are de livered at the building and that at which the sash are hung and admits of the ready removal of a damaged or defective pulley and tion assumed by its structural elements for its insertion in the framing shown by indicating the position of one of them in dotted outline; Fig. 3 is a sectional View taken on the dotted line 3 3 of Fig. 2 with the sheave removed and after the removal of the housing fromthe framing and looking toward its y upper end; Fig. i,is a similar View looking toward the lower end of the housing; Fig. 5, is a view similar to Fig. 2, but showing a housing embodying the invention in a moditied iorm, the position occupied by the sheave as well as that assumed by one of the elements of the housing for inserting the pulley in its mounting frame being shown in dotted outline; Fig. 6, is a sectional view taken in the horizontal plane indicated by the dotted line 6 6 of Fig. 5, looking toward the lower end of the housinoP after its removal from the framing; F ig. is a view in side elevation showing a completed sash pulley embodying the invention in a modified form installedin proper clamping position in the pulley stile of a window frame, the position 'assumed by one of the structural elements of the housing for inserting the pulley in the framing beingl indicated in dotted outline; Fig. 8 is a view similar to Fig. 7 but showing a pulley embodying the invention in another modiiied form; Fig. 9, is a view in vertical section taken on the median line ofFig. 8 after the removal of the sheave; Fig. l0, is a view similar to Fig. 9, but showing the housing in slightly modified form installed at the extreme upper end of the mounting frame with vits upper end confined between the inner and outer walls of a recess in the head of the window frame; Fig. ll is a view in side elevation of a modified form of the pulley as it appears upon first entering the framing, which latter is shown l in fragmentary vertical section, the sheave being Vshown in dotted lines; Fig. 12 is a view in median vertical section of Fig. 11, but showing the pulley after its structural elements have become positioned in proper clamping relation with the framing; Fig. 13 is a view taken in the horizontal lane indicated by the dotted line 13-18 of 4 ig. 12 looking toward the upper end of the housing removed from the framing and without the sheave; Fig. 14 is a similar view looking towar'd the lower end of the housing; Fig. 15 is a view in side elevation of a modified form of the pulley properly installed in its mounting frame, the position of the sheave as well as that assumed by one of the elements of the housing for inserting the pulley in the framing being indicated in dotted lines 5 Fig. 16 is a view in rear elevation of the housing as shown in full lines in Fig. 15, kafter its removal from the framing; Fig. 17 is a view similar to Fig. 15 but showing the pulley in a further modified form.

Similar numerals refer to similar parts throughout the several views.

The sash pulley forming the subject matter of the present application is distinct improvement over the forms heretofore employed, having for an object the saving of labor, in installing, by the avoidance of screws and similar securing devices, and embodies new and improved principles and details of construction relating more particularly to the mobility of its structural elements, their form and manner of arrangement in coperative relation, whereby provision is made for the practical application of the device to window framing` of widely variable relative thickness and its field of utility immeasurably increased; and while, for convenience in illustration, 1 have utilized a fragment of the pulley stile of a wooden or kalamein window frame, it will be understood that my improved housing is intended for use in all frames in which pulleys are a requirement without regard to their character, use to which they are to be put or the material employed in their construction, and while 1 have shown the structural elements of my improved housing as formed of cast and sheet metal and ordinary wire, it will also be understood that these elements or either of them may be formed in whole or part, by other means than cast or sheet metal or wire by well known processes now in common use, and that particularities of material or construction relating to the sheave, nature of its bearing, etc., are not material in so far as the present invention is concerned.

Referring to the drawings, the supportin element A of the housing comprises a front plate 33 having an opening 4 for the passage of a sheave 18 and a pair of rearwardly extending, ysnhstant,ially parallel,

side walls 5-5, preferably of less length than front plate 33 to yconfiningly support the ends of an aXle 17 upon which the sheave 18 is journaled between them and which are connected at their lower ends by a cross wall 26 to provide a base for the housing to rest upon in its mountingV frame 7, and if desired, walls 5-5 may oe connected at their upper ends to form ay cross wall 23.

Upon an angle to the perpendicularl on a line spaced back somewhat from its rear edge, each of the side walls 5 5 is bent out at an angle and turned back in a kplane parallel to itself to form the bottom 9 and outer wall 10 of a narrow forwardly facing channel 31 to provide a pair of confia ing runways for therear edges 22 of the side walls 12 of a second structural element B of the housing, a hollow shell having an open front andrear of substantially rectangular configuration for the unobstructed passage of sheave 18 when rotatably mounted within it and comprising a pair of side walls 12 connected at their upper ends by a cross wall 14, to form a hood to shield the sheave and guard against dislodgment of the chain, cord or ribbon in its passage over it, and which is provided with an opening 15 for a purpose that will presently appear, while at their lower ends side walls 12 may be connected to form a cross wall 16, if desired.

The front edges 11 of side walls 12, element B, preferably occupy a plane somewhat in advance of that in which the frontedges of cross walls 14 and 16 lie and to which they are preferably beveled back at their upper and lowerV ends to facilitate driving or sinking them into the framing, as may be necessary in clamping the housing in a pulley stile of excessive thickness, and is generally preferable as increasing the frictional resistance of the parts to retrograde movement, and these edges are shown as embedded in Fig. 2.

The parallel side walls 12 of element B have their straight front edges 11 positioned in substantially the same vertical plane while the rear edges 22 of these walls for a considerable part of their length are bereled at an angle corresponding to that of the bottoms 9 9 of channels 31-31, element A, also in these side walls 12 a su`1t ably disposed open rack may be provided by punching in each a series of spaced openings the metal intervening forming` the teeth 19 which are adapted to pass and successively engage the downwardly directed edge of a detent 21 consisting of a tooth like protuberance extruded fromeach of the side walls 5-5 of element A, for a purpose hereinafter referred to.

To complete the housing, its structural elements A and B, which V,from the above description are seen to be separate and dist-inct in themselves and individually adapted to provide7 the one a support and the other a hood and guide for a sheave and a chain, cord or ribbon in its passage over it, are then assembled in mobile relation whereby they are adapted to function coperatively for the purpose of securing the housing in its mounting frame and are connected, united or interloclred in such manner as to be held against escapement but at the same time adapted to undergo a variety of changes in relative position by passingelement B over the rearwardly extended side walls -5 of element A and slipping its side walls 12-12 back into the forwardly v facing channels 3.1-31 ot element A until their beveled rear edges 22 are brought to a bearinupon the inclined bottoms 9-9 of these channels.

When in this position, it is obvious that the structural elements A and B, composing the housing, are interlocked and held against escape the one from the other, while it is equally obvious that their relative positions can be varied at will by raising or lowering element B, the upward and downward movement of which is limited only by the coming oi2 its lower '16 or upper cross wall 14: into engagement with the sheave or a part or" walls 5 5 oi element A, and as during this movement their conjoined parts are brought into cooperation upon a vertical incline it is evident that these changes in relative position may talre place simultaneously in substantially right angled planes and the distance intervening between the front edges 11 of side walls 12 of element B and iront plate 33 oi element A be increased or diminished at will by raising or lowering element B, hence the adaptability of the housing to function as a clamp and of its elements to move into clamping relation with its mounting trame, is apparent.

To insert the pulley and secure it by the structural elements oiZ its housing in the framing, rear element B is first raised into the position substantially as shown in dotted outline in Fig. 2, the pulley is then inserted by passing it, upper ond first, through the routed opening prepared for it in its mount-V ingk trame 7 and swinging back its lower end until the supporting element ot the housing has become seated upon itsv base 26 in the trame rout with a portion of its lront plate 83 in engagement with the outer side ot mounting frame 7 to prevent its further inward passage through the frame rout, element B will then have passed entirely through the rout and become positioned with its front edges 11 facing the'inner side of' mounting frame 7 and a little to the rear of it.

The end of a lever, for instance a screw driver hlade,.is then .passed through open-A ing 4: in front plate 33 of element A and beneath cross wall 14 ot element B, its point .slipped up through opening 15 provided as are adapted to slide in cooperation analogous Y to that of a pair of wedges driven past one another; continued downward movement of element B will now obviously result in drawing back and tightly clamping element A to the outer side of the framing while at the same time it is itsellz gradually clamped more and more tightly to the inner side of the framing by element A, and if prolonged, this movement will result in sinking edges 11 more or less deeply into the framing;`

thus it will be readily seen that uniformity in predetermined thickness of the framing is not an essential requirement tor the siii cient exercise of its vclamping function by the housing. Y

In their then selected relative position, elements A and B of the housing with the mounting 'frame 7 securely clamped between them, are preferably held and maintained by 100 the f ietional resistance resulting trointheir engagement with the framing and the tight nt of their conjoined parts; it desired, however, an additional safeguard against the accidental loosening of the elements may be 105 provided without the embodiment of any additional parts, and which may take the term ot an open rack formed in side walls 12 ot element B by punching a suitably disposed series of openings in each, the metal inter- 110 vening forming the teeth 19, which as element YB is forced down into clamping engagement with the tra-ming, are adapted to pass and successively engage the downwardly directed. edge o?? a detent 21, in form, 115

a tooth like protuberance extruded Afrom each ot the side walls nv ot element A. ils a tooth 19 ot element B passes down over detent 21 of element A, the side walls oi: the

respective elements are sprung and held 120 slightly apart until the tooth has passed entirely over the detent when the walls of the respective elements spring together again bringing the upwardly directed edge of tooth 19 into interloeked engagement with the 125 downwardly directed edge o t detent 21 thus securing element B against retrograde movement.

The pulley may readily be removed from the framing by a reversal of the operation 130 described for installing it and tooth 19 easily disengaged from detent 21 by slightly spreading apart walls 12 of element B.

In Figs. 5 and 6 a housing embodying the invention in a modified form is shown in f become an integral part by a rivet 17 which may also serve as the axle around which sheave 18 revolves when journaled between walls 5 in position substantially as shown by dotted lines in Fig. 5; in this form element B is shown as formed of wire heavy and strong enough to withstand the strains and sudden j ars of ordinary use and which may be bent up to form a pair of substantially parallel side walls 12 having a cross connection 111 at their yupper ends and each terminating at its lower end in an encircling ring for the confinement of a cross piece 16 thus completing in front and rear elevation substantially a hollow rectangle the sides of which present at their upper and lower ends backwardly curving front edges 11 and intermediately disposed straight rear edges 22.

To complete the housing, the side walls 12 of element B are inclosed Vin the runways 31 of element A between the side walls 5 and 10 of which they are frictionally held but otherwisefree to move up and down, back and forth, in 'sliding and swinging relation adapting element B for impelled movement into clamping engagement with the framing when the pulley is positioned in it for which purpose element B is first lowered into substantially the position shown in dotted outline in Fig. 5, the pulley is then inserted in the frame rout lower end first and its upper end swung back until its inward movement through the rout is arrested by the engagement of its front plate 33', with the outer side of the framing, the end of a lever is then inserted above sheave 18 and below cross connection 14, element B, and with the sheave as a fulcrum, the element is raised into the position shown in full lines in Fig, 5; in ascending to which position element B is wedged back by the cooperation of the upwardly and backwardly curving front edges 11 of its side walls 12v with the upper inner edge of the frame rout and its lower end brought forward into engagement with the framing through the coperation of the rear edges 22 of these walls with the bottoms 9 of runways 31 of element A and tends to carry back this element also, which movement, however, is resisted by the engagement of a portion of its front plate 33 with the outer side of mounting frame 7, resulting in tightly wedging element B between the bottoms 9 of runways 31, element A and the inner side of mounting frame 7 and bringing the elements of the housing into substantially the relative position shown in full lines Fig. 5, with the mounting frame clamped between them.

In this modified form it will be appreciated that in clamping a relatively thick pulley stile the resistance of the front edges 11 of walls 12 of element B to sinking into its inner side may increase to a point j at which the strain will be such as to cause these walls to yield and become permanently bent back out of normal thus facilitating the clamping under strain of stiles differing widely in thickness and as the opposing forces when the elements haveY arrived in clamped position are directed in planes at right angles to the coperating parts they will have no tendency to loosen under strain, while accidental impact by the sash weight on the lower end of element B would tend to tighten, instead of loosen, the .clamping grip of the housing on the framing.

Fig. 7, illustrates a housing embodying a modilied form of the invention .in which element B2 in response to impelled upward movement is coperatively advanced into clamping relation with the framing by intermittent forward movement by means of a series of stepped vertical risers 22a and short connecting inclines 22b which constitute the rearwardly directed edge of an elongated, vertically inclined slot cut in each of the side walls 122 of element B2 and which are adapted successively to pass in mobile engagement between the side walls 52 and 102 of channels 312 a suitably dis- 110 posed bearing 32 raised somewhat from the bottoms 92 of these channels, thus adapting the elements of the housing to undergo change in relative position in a manner by a turning or swinging as well as sliding 115 movement of element B2. Y

The process of installing thisV modified form consists in first lowering element B2 to the position indicated by dotted lines, insert-ing the pulley in the frame rout lower 120 end first, swinging back the upper end into the rout and prying up element B2 into some such position as shown in full lines in the drawing, it being obvious vthe element will arrive in its selected clamping position 125 in a relatively thick hanging stile with less up travel than will be required for one of less thickness.

In this as in the form just described the elements are safely held in the relative po- 130 sition selected for clamping the window framing b y the frictional resistance of their coperating parts to which the clamping strains act in relatively perpendicular plane-s the only tendency toward retrograde movement being that ,contributed by the weight of element B2 which is negligible by reason of its relative insigniiicance and accidental impact by the sash weight would simply urge the pulley housing to clamp the framing more securely.

ln Figs. 8 and 9 a housing is illustrated embodying the invention in a modified form in which the structural elements of the housing are movably connected by mounting element B3 upon sheave axle 173 betweenside walls 53-53 of element A3 and adapted relatively for limited rotary or swinging movement.

In this form element A3 has a portion of its face plate extended to overlie a part of the framing upon its outer side adjacent the rout formed in mounting frame 7 3 for the housing to seat in and its side walls 53w53 at their upper ends carried up from a point spaced to the rear of its front plate to form extensions with front edges 27 beveled to provide wedging means to retract the upper end of the housing as they are driven up through the framing at the upper inner edge of the rout in mounting frame 73 which they are adapted to engage and penetrate more or less deeply according to its thickness, thereby facilitating the inserting and proper securing of the upper end of the housing in framing differing relatively in thickness, by confining mounting frame 73 the upper end of the rout between the rearwardly facing engaging face of face plate 333 and front edges 27 of the extensions at the upper ends of side walls 53-53 of element A3.

ln face plate of element A3 a short length of the metal removable to form opening` is left attached at the upper end of the opening and bent in at an angle to provide a pawl or detent 24 to engage a forwardly facing edge 25 of a boundary wall at the upper end of element B3 to lock the structural elements of the housing in the relative position assumed by them for seniring the housing and pulley in a mounting frame 73.

ln the form here shown the hooding and securing element B3 is provided at its lower end with an extension 28 a forwardly faeing edge 113 of which is adapted to engage, pene-trate and become embedded in the window framing upon-the inner face of mounting frame 7 3 adjacent the lower end of the opening routed in it for the pulley to seat in, while at its upper end in cross wall 143 element B3 is provided with a depression presenting a forwardly facing edge 29 to furnish a ledge to be engaged by the point of al screw driver or nail set as may be used to force back the upper end of element B3 to swing forward its lower end and drive the forwardly facing edge 113 of its lower end extension 28 into the inner face of mounting `frame 73 to bring the elements of the housing 'at its lower end into proper clamping relation with said frame to secure the pulley against inward or outward movement therein and to bring edge 25 at the upper end of element B3 into interlocked engagement with detent 24 of element A3 beneath which the upper face of cross wall 143 is adapted to slide in upwardly springing engagement as the upper end of element B3 rotates backwardly into locking position within element A3.

To install this modied form of pulley in window framing element B3 of the housing is first swung forwardly at its upper end out through opening 43 in front plate 333 of element A3 into substantially the position shown in dotted outline in Figs. 8 and 9; and the pulley inserted in a rout in the hanging stile 73 upper end first, the said stile adjacent the upper end of the rout entering between the forwardly facing edges 27 of the upper end extensions r-of side walls 53--53 of element A3 and the rearwardly facing engaging face of its front plate 333.

The pulley is then swung back into seated position in the window framing during which movement the supporting element of the housing is driven upwardly by the en gagenient of its base 263 with the bottom of the rout and its upper end extension faces 27 ldriven more or less deeply up through hanging. stile 7 3 on its inner side thus securing the pulley against inward or outward displacement at its upper end irrespective of a considerable range in thickness of the hanging stile.

Element B3 is then rotated bringing its upper end back through opening 43 within element A3 and the forwarding facing edges 113 of its lower end extension 28 into engagement with the inner face of hanging stile 73 into which it is driven more or less deeply relative to the thickness of the particular hanging stile engaged by driving backelement B3 at its upperV endV until the boundary edge 25 at its upper end has arrived at the inwardly facing edge of detent 24 which then springs down into engagement with edge 25 and locks the housing elements in the relative position then assumed in clamping engagement with hanging stile 73 releasably securing the pulley in the framing, in substantially the position shown in full lines in Figs. 8 and 9.

In Fig. 10V a housing embodying the invention in a substantially similar modified form to that shown in Figs. 8 and 9,l is shown installed at the eXtreme upper end of mounting frame 74 with its upper end confined and-secured against inward and outward movement between the front and rear walls of a recess 34 in the head 30 of the window framing instead of its being held against such movement by confining a portion of the mounting frame within a forked extension at the upper end of the supporting element of the housing.

In this instance also base 264c is shown as fiat instead of semicircular and disposed upon a rearwardly ascending incline, while detent 24 is shown as a spring pawl mounted at the upper end of element B* and adapted to engage successively the teeth 25 of a suitably disposed ratch formed integral with element A, the arrangement being such as to facilitate the inserting and securing of the housing and pulley in window framing of relatively variable thickness by reason of its operating in a manner to obviate to a degree the driving of edges 114 of extension 28 at the lower end of element B4 into the inner face of mounting frame 74 thus minimizing the force required to bring the elements of the housing into locked engagement to secure the pulley in the framing.

Aside from these slight modifications in form and arrangement the structural elements of the housing as well as the operation for installing it in the window framing are essentially the same as for the form last described.

In Figs. 11 to 14 inclusive a housing ernbodying the invention is shown comprising a supporting element A5 having a centrally apertured face plate, base and side walls and a hooding and securing element B5 which to facilitate inserting and bringing the structural elements of the housing into seJ curing engagement with the window framing, is made extendible by a form of construction consisting in uniting a pair of suitably formed units in mobile relation the one forming the upper or hooding end of the element being adapted to slide in and out in frictionally resistant telescopic relation with the unit forming its lower end and which is pivotally mounted preferably coaxially with the sheave between the side walls 55-55 of element A5 and adapted for llimited rotary movement.

The upper unit of element B5 comprises a cross wall 145 from which a pair of side walls 8 descend at the front and rear edges of each of which a narrow strip of the metal is bent out and around to form the bottoms 95 and outer walls 105 of a pair of oppositely disposed channels to provideeach of walls 8 with a confining runway adapted to embrace front and rear edge portions of the side walls 125 of a complemental unit comprising at its lower end a cross wall 165 from which a pair of side walls 125-125 ascend which may be of irregular outline except for the edge portions which are confined in the runways of its complemental unit which are straight and parallel and in a somewhat centrally disposed position in each of side walls 125 a circular opening is provided for the passage of sheave axle 175 to admit the mounting of element B5 thereon between the side walls 55 of element A5 to connect the elements of the housing in relatively mobile relation and adapt them 75 to cooperate as means for securing the pulley in window framing whether of uniform or relatively variable thickness.

To installfthe pulley embodying my invention in this modified form in a window frame, the telescopic units composing element B5 are first collapsed into the relative position shown in Fig. 11, the pulley is then inserted in the rout in mounting frame 7 5 entering its lower end first and swinging back its upper end until the housing and pulley have become seated as shown in Fig. 11, the point of a screw driver blade is then placed against the forwardly facing edge of the opening 155 in cross wall 145 of the unit forming its upper end and element B5 at this point is pressed backwardly which causes its lower end to rotate forwardly into engagement with the inner side of mounting frame 75 adjacent the lower end of the 95 rout in which the housing is seated, then utilizing the screw driver as a lever with the sheave as a fulcrum element B5 is drawn out into extended position as shown in Fig. 12.

Further drawing apart of the units form- Y ing element B5 being prevented by la detent 13 carried by one of them and adapted to engage an edge at the upper end of a bottom 95 of the confining runway of its complementary unit.

In drawing out element B5 into extended position the forwardly projecting extensions at the upper end of its side walls 8 are brought into penetrating engagement with the framing at the upper end of the rout in mounting frame 7 5 and at a depth from its inner side dependent upon its thickness and as the forwardly directed edges of these extensions are beveled back at their upper ends they operate with a tendency to wedge 115 and drive back element B5 at its upper` end thus causing its lower end to exert ever increasing pressure against the inner side of mounting frame 75 thereby retracting the housing and pulley in the framing and Sel'n Figs. 15 and 16 a modified form of the invention is illustrated in which the telescoping unit of element BG is shown asformed of a single piece of wire while the pivota-lly mounted unit is shown with its side walls 12G connected for a part of their width by a cross wall at their upper as well as by one at their lower ends to better enable them to resist spreading and enhance their efficiency in preventing the escape oi the chain or cord from the sheave groove.

The units forming element BG are assembled in telescopic relation by inclosing portions of walls 8 of the sliding unit in runways formed in the side walls `126 of the swinging unit by cutting spaced slots 20-20 and drawing out the metal between them as shown in the drawing.

The operation of installing this modified form of pulley in the framing is substantially the same as for the form last described but in coming to position in a relatively thick mounting frame the walls S of the telescoping unit may become permanently bent back somewhat from normal enabling the elements or" the housing to clamp under initial strain framing of a relatively wide diversity in thickness without impairing the strength of walls 8 or altering their suitability for resisting the strains of ordinary usage to which they may subsequently bel put and without necessitating the application of undue force in drawing out the telescoping unit.

ln Fig. 17 a modified form of my invention is illustrated in which the complemental units constituting element B7 are assembled in reverse position to that occupied in the form just described.

The telescoping unit in this instance is shown as formed of ordinary wire and with each of its side walls 82 inclosed and adapted to slide in a runway 317 formed at the rear edge of each side wall 127 of the swinging unit by bending around a tongue of the metal in manner and shape substantially as for a hinge joint.

rlhe pulley in this form is installed and secured in the framing in substantially the same manner as for the two forms last described except that it is inserted in the frame rout upper end first and that the telescoping unit is forced out by a downward instead of by an upward movement'.

From the above disclosures it will be readily seen that a housing for sash pulleys and the like is provided the structural elements of which without the employment of additional means or in any way interfering ith the requisite supporting and hooding feature of such housings are suitably adapted to secure the housing and pulley in window framing the mounting frames of which may be of either uniform or relatively variable thickness the resulting advantage being to open for the housing and pulley a broad field of utility which would remain closed were its successful use contingent upon any degree or" uniformity in predetermined thickness oi the mounting frames provided for it to seat in.

0f course other means may be employed to Jform a sheave housing embodying requisite supporting and hooding features 'from a pair of elements assembled in relatively mobile relation and adapted to function as a clamp to secure the housing in its mounting frame, and it will be observed that in the forms shown in Figs. 2 and 17, without other change than the assembling of the elements loosely, instead of having to be pried down elements B and B7, respectively, impelled by the force oli gravity alone, will drop into proper clamping position after passing through the trame rout when the pulley is seated and in a manner and to a degree in the iorms shown in Figs. 5-7- 1112 and 15 the same result would follow were the elements of the housing assembled loosely and with elements BB2B5- and B6 respectively, in inverted position, and these and other modifications to which the invention is equally susceptible need not be illustrated as modifications within the spirit and scope of the invention as pointed out in 9 the claims will be obvious to those skilled in the art.

'What I claim as new is 1. A sash pulley comprising a sheave, a housing member constituting a journal support for the sheave, and a housing member constituting a hood lor the sheave, said members being relatively movable and adapte-d thereby to releasably lock the housing` members into engagement with a rout in a window frame.

2. A sash pulley comprising a sheave, a pair of housing members relatively movable to thereby releasably lock the sheave housing to a window frame, one of said members serving as a journal support for the sheave, and one of said members serving as a hood for the sheave.

3. A sash pulley comprising a sheave, a pair of housing members to serve respectively as a journal support for the sheave and a hood, and to seat in a rout in a window frame, said housing members being con nected together and relatively movable to thereby releasably lock the sheave housing to the window frame.

Il. In a sash pulley, a housing, comprising two separate and distinct members constituting respectively a support and a hood for a sheave, means for connecting them in mobile relation to adapt the conjoined members to undergo change in relative position, whereby the pulley may be inserted in an opening routed in a window frame member, and the members of its housing moved into clamping relation with saidwindow frame member to secure the pulley therein, and means for releasably maintaining the housing members in the relative position selected for clamping said frame member.

thickness, whereby the pulley may be positioned and secured in window framing relatively changeable in thickness.

6. In aL sash pulley, a sheave bearing housing, comprising a pair of individual structural elements, constituting respectively a support and a hood for the sheave, means for uniting them in relatively movable relation whereby the said elements are adapted, by a manually controlled movement of one of them, to coperatively move into penetrating'and clamping engagement with a window frame member subject to a relatively wide range in thickness, to bring the housing and pulley to properly seated and secured position therein, and means associated with said elements for locking them in the relative position selected for securing the housing and pulley in said frame member.

7. In a sash pulley, a sheave bearing housing, comprising a plurality of distinctly individual sheave supporting and hooding elements, having vertically inclined complemental interlocking parts whereby they are movably connected in coperative and frictional relation, simultaneously to effect changes in the relative positions of the conjoined elements in angularly disposed planes, thereby facilitating the positioning of the pulley in a mounting frame, and the movement of the structural elements of its housing into frictionally maintained clamping relation therewith.

8. A sash pulley comprising` asheave, a housing member, to which said sheave is journaled, adapted to fit into a recess in a window frame, and provided with means to engage the forward face of the frame to limit the movement of said member in one direction into said recess, and with means to sustain the thrust of said housing member against the end of said recess, and a hood member, carried by and movable relative to said housing member, to releasably engage the rear face of the frame and lock said housing member to the frame irrespective of a considerable range in thickness of said frame.

9. In a sash pulley, a sheave, a housing member having rearwardly and forwardly facing engaging faces to engage, respectively, the front and rear faces of a window frame member to prevent its inwardly and outwardly displacement upon coming to eperative position therein, means, carried by and coactive with the housing member, to engage the rear face of the frame member and adapted to penetrate and embed therein to a greater or less extent as may be required by the thickness of the particular frame member engaged, to lock the housing member to the frame member, and means to hold the housing member and pulley in locked relation to said frame member.

lO. In a sash pulley, the combination with a sheave, of a housing, comprising a pairof elements constituting, respectively, a support and a hood for the sheave, movably connected in frictionally resistant, relatively movable relation and adapted to cooperatively move into securing engagement with a window frame member through the impelled movement of one of said housing elements into backwardly forcing engagement with the rear face of said frame member, whereby the housing and pulley may be positioned in said frame member vand secured therein by a frictionally maintained engagement of the structural elements of said housing.

l1. In a. sash pulley, the combination with a sheave, of a housing comprising a pair of members constituting, respectively, a supporting' member, provided with a rearwardly facing face to engage the forwardly facing face of a window frame member, to limit the movement of the supporting member, in one direction, into a rout formed in the frame member for the pulley to seat in, and a hooding and securing member, provided with forwardly facing faces to engage the rear face of the frame member to clamp the supporting member to said frame member, and means for movably uniting the said housing members in relatively mobile and frictional relation, whereby they areadapted, by the impelled movement of the hooding member, to cooperatively move into penetrating and clamping engagement with the window frame member, into the rearface of which, the forwardly facing face ofthe hooding member may penetrate, and become embedded to a greater or less extent as may be required by the thickness of the particular frame member engaged, to bring the housing members, relatively, into proper locking position, and facilitate securing the pulley in window frame members of rela` tively variable thickness, by a frictionally maintained engagement of the structural members of the housing.

l2. In a sash pulley, a sheave, a sheave housing comprising two members, constituting, respectively, a support and a hood for the sheave, means for connecting said housing members, relatively, in mobile relation, whereby the said housing members are adapted to move into engagement with a frame member through the relative movement of said housing members in response to the impelled movement of one of them, thereby to clamp and secure the housing and pulley in said frame member, and means carried by said housing members to maintain them in the relative position assumed for securing the housing and pulley in said frame member.

13. In a s ash pulley, the combination with a sheave of a housing, comprising a supporting member, to which the sheave is journaled, adapted to seat in a rout formed in a mounting frame, and having a centrally apertured face plate, a rearwardly facing engaging face to coperate with the forward s'ide of the mounting frame to limit the movement of said supporting member, in one direction, into the rout in said-mounting frame, a base to sustain the thrust against the end of said rout, and side walls to support the sheave aXle, and an individual hooding and securing member, carried by and movable relative to the said supporting member, comprising a hollow shell having an open front and rear for the unobstructed passage of the sheave, when rotating within it, and boundary walls presenting forwardly facing, terminally beveled edges to engage and penetrate, with a backwardly wedging tendency, the rear side of the mounting frame, and embed therein to a depth variable in correspondence with the thickness of the particular mounting frame engaged, to clamp the said supporting member to the mounting frame selected irrespective of a relatively wide range in thickness of such frames, and means, carried by the housing members to relatively lock and maintain them in clamped relation with the mounting frame.

14;. In a sash pulley, the combination with a sheave of a housing comprising a supporting and a hooding member, the former having rearwardly, and the latter forwardly facing frame engaging faces to coperate, respectively, with a front and a rear face of a mounting frame in clamping and embedding engagement, said housing members being assembled in relatively movable relation with their frame engaging faces, respectively, facing toward one another in variable spaced relation, and adapted to assume a variety of changes in relative position, thereby to increase and diminish the relative distances by which the frame engaging faces of the respective members are spaced apart relative to the direction of the particular movement of the member through which the change in relative position of the conjoined members is effected, whereby the said housing members may be relatively positioned to facilitate inserting the housing in a rout in the mounting frame and bringing said housing to seated position therein with the frame engaging faces of its respective members properly positioned for movement into clamping and embedding engagement, respectively, with the front and rear face of the mounting frame, to secure the housing and pulley therein by the clamping of said mounting frame between said housing members.

15. In a sash pulley, the combination with a sheave, of a housing embodying a supporting element comprising a front plate having an opening for the passage of the sheave, a rearwardly facing face for engagement with the outer side of a mounting frame to arrest the inward passage of the element upon its coming to position in said frame, a base for it to seat upon and rearwardly extending side walls to receive and support an axle upon which the sheave is rotatably mounted, and an eXtendible element, mounted coaXially with the sheave in the supporting element and adapted for limited movement therein, comprising a pair of units slidably assembled in frictionally resistant telescopic relation, forming a hollow shell for the free passage of the sheave when rotating within it and having positioned upon its boundary walls forwardly facing faces to engage the inner side of the mounting frame in backwardly wedging and penetrating engagement, the relation being such, that the extendible element may be collapsed, the pulley inserted in the mounting frame and the elements of the housing respectively brought into proper clamping engagement with the inner and outer side of the mounting frame, to secure the pulley therein by drawing out the telescopically assembled extendible element into frictionally maintained extended position.

16. In a sash pulley, a sheave, journaled in a housing, embodying a supporting element comprising a centrally apertured front plate, a rearwardly facing face for engagement with a forwardly facing face of a mounting frame to arrest its inward passage upon coming to position therein, a base for it to rest upon and inwardly extending side walls to support the sheave axle, said walls being provided with runways having forwardly facing bottoms, and a second element, a hollow shell like structure, within which the sheave may rotate unobstructedly, comprising a pair of side walls, connected at their upper ends by a cross wall to form a hood for the sheave, adapted for sliding confinement within the runways of the supporting element and having front edges adapted to engage with the inner side of the mounting frame and to embed therein more or less deeply, relative to the measure in thickness of the mounting frame engaged, and a detent, carried by one of the housing elements adapted to engage successively the teeth of a ratoh, carried by the other of said elements, whereby the pulley may be seated in a mounting frame and looked in clamped engagement therewith with the side walls of the second element wedged between the bottoms of the runways of the supporting element and the inner side 0I' the mounting frame.

17. In a sash pulley comprising a sheave, a housing member serving as a journal support for the sheave, and a relatively movable housing member serving as a hood for the sheave, the embodiment of means, adapted in ooperation with said housing members to lock the housing and pulley to a mounting frame.

In testimony whereof I hereunto aHX my signature this 29th day of January, 1920. Y JAMES II. FOUTE. In presence of MARY P. FooTE, LOUISA B. FOOTE. 

